<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Vue 测试实例 - 菜鸟教程(runoob.com)</title>
<script src="./vue.min.js"></script>
</head>
<body>
<div id="app">
	<div id="counter-event-example">
	  <p>{{ total }}</p>
	  <button-counter v-on:increment="incrementTotal"></button-counter>
	  <button-counter v-on:increment="incrementTotal"></button-counter>
	</div>
</div>

<script>
Vue.component('button-counter', {
  template: '<button v-on:click="increment">{{ counter }}</button>',
  data: function () {
    return {
      counter: 0
    }
  },
  methods: {
    increment: function () {
      this.counter += 1
      this.$emit('increment')
    }
  },
})
new Vue({
  el: '#counter-event-example',
  data: {
    total: 0
  },
  methods: {
    incrementTotal: function () {
      this.total += 1
    }
  }
})
</script>
</body>
</html>